1. grain hopper
2. straight railway track
3. curve 30 degrees railway track. All found under Decor / Misc. Decor and cost 0.
This is a hard job to lay the tracks down. Make sure that the XYZ co-ordinates match where ever you lay the railway tracks. I've laid mine on a level section of my game.
You need Ambitions and to place the packages in both the mods/packages (Sims3 ) directory and in the "The Sims 3 Create a World Tool/ Packages" directory for the 3 items to show in your game. There is an earlier post explaining how to install items in CAW.
Importing packages into CAW
Near the silo I raised the road in CAW to go over the railway line, but near the cooling towers no matter what I did, I couldn't get the road level above the railway line so I "tilted" the railway tracks before and after the road. This way is quite time consuming and if avoidable, don't do it. Just that CAW is a real pain in the "$%£" to use.
Just to let you know, a locomotive will be available soon, a tunnel, a warning sign with a flashing light as a "Railway crossing" and silo connection pipes to the train wagons. Other items will follow in the future.
NB. I laid the tracks near the silo " in between" the 2 lots. In CAW you can't place objects on lots.